Lock for doors, drawers, or the like



T. SMITH LOCK FOR DOORS, DRAWERS, OR THE LIKE Flled Sept 20 1928 March 22, 1932.

' Patented Man 22,5 1932;

' V QTIMQTHYSMITHQ or'm'onumeron, nnunnrmnnw ma a noexron nooaannnwnnsgon'rnnnixnl 1 Applicat ionfiled septeniber'zo, 19 28 Serial at. 367,294 'j c This invention relates to looks, and more particularly: to locks of, the kind commonly knownas rim,- and mortice locks. V I "The present invention has" for its object a certain improvements in the structural feta-ii tures of: such locks; tori-instance, dispensing Withthe special locking bolt the latch bolt being adapted to be lockedil By 'means ot; this-construction the siz'ef'otthe lockmaybe reduced-.- Without impairing efliciency; This applies'more particularlyto the mortlce lock," in whichgthe few operative partsare so compactly arranged: that the lock'mayg be made of a thickness substantially less than any of the locks eta-this type hitherto con structed. H v 1 According to thepres'ent inventiomthe lock comprises a metal case and a latch bolt slidably operative therein.- The inner portion of the latch bolt resembles somewhat an outline of the-letter P horizontally disposed, having a Uv shaped orifice therein, the orifice extending-to a transverse stripprovided at the end of,"andprojecting above the plane of the latch bolt.

The cam for shifting the latch bolt inward- 1y, is formed with a round boss adapted to engage in the u' 'sha'ped orifice hereinbefore mentioned this boss is provided'with aproj'e'ction on each side andinalignment, the

outer vedge of the projections abut on the. inner edge of the transverse strip at the innerfi end of'the'latch bolt member.' The ends of o ,c the cam boss are reducedindiaineter for piv- V 4 V V n v 0 otallymounting-the camin a circular orifice cover thereof; H

. l Thepcamisformed Withasuitably shaped hole therethroughto receive a spindle, on

I; which is mounted a handle or handles by means of which the cammay be slightly rotated displacing the latch bolt member inward ly againstthe resistance of aspiring;

Thelocking mechanism comprises a locking'pla te eccentrically mounted to rock ona vpin extending between the front and rear lateseof the lock case. The locking-plate is ormed with a projection against hichthe ppere part: of one leaf, of aisubstantially V- haped' spring abuts. Thereare also other bolt member.

i provided in the metalcaseand the detachable I projections 'on' the lockingplate, one to prevent-it from being} given 'an' undue angular displacement, and the otherto engage in a notch formedin'thef edge-of the latch bolt memben-W 7 f y I V V Asnitably shaped orifice is provided inthe locking plate; to permit of the' key when in? "serted in the keyhole; and turned, to givethe locking plate slight angular displacement,

moving'the projection'out' off,'o'r into engagew.

rn'ent with the notch in the edgerof the latch The spring hereinbefore mentioned, is. pivoted on a'pin secured "in thejlock' cas'eythe outer portion of the, one leaf abutting on a] 06 *1 stop or projection on thelockingfplataiand the outer portion of the other leaf abutting on a shoulderformed by'the' reducedjthi'ck ness of thelatch bolt inside the lock case;

But in order that theinvention :maybe 70, better understood, drawings" are appended illustrating the invention, wherein similar parts are designated similar reference numbers throughout, the "several views, in which?? f j I I i E 5'5. Figure 1 shows aplan of a rim lock ei'nbodying the invention with a portion of the cover plate removed 7 IFigureQ shows a plan of the rim lock 100k ingfrOm' thefrOntL i 'f V c Figure 3 shows an endview of FigurejL Figure 4sh'oivsan inverted pla'njof the lockingi plate. t i i Figure 5 shows memben-j vm v Figure 6, shows ansedge ViGW'Of Figure" 5. Figuref7'sho'ws a plan of a mortice lock planof the latch "bolt embodying the-inventionW-ith a p'ortion of the cover plate removed; v V

Figure 8 showsafplan, and Figure .9 a side 1vieliv of the latch bolt member of the mortice V V I J Figure 10 shows an end View of Figure 7. Figure 11 showsan inverted plan of the locking plate of the m'ortice lock. 'Referring to the accompanying drawings,

1' indicates the lock case "and Q'therimor flange thereof, 8 isfan overhanging extension of the end plate 6," and 7 are holes=(preferably countersunk) for securing the lock to 1 6, of the lock easel. The free end of they detachable cover plate 4, may be secured to the rim or fiange2, by the threaded screw 3. The latch bolt member 9 rearwardlyofthe catch is formed of a thickness less than that of the catch, providing a shoulder 10 for one leaf 13 of the spring 12, to abut against. 1

resembles somewhat the outline of the letter P horizontally disposed, as at 15, provided with a U shaped orifice 14 therein. The outer end oft-he orifice 14 is closed by a transverse stri 11, the strip projecting beyond one face of t e part 9a of the latch bolt member 9.

The cam is formed with a pair ofoppositely disposed wings 17. The outer edges 17a, of the wings, abut against the inside edge of the transverse strip 11 of the, bolt member 9.

The boss 160i the cam extends through the U shaped orifice14 of the bolt member and its ends are reduced in diameter, as at 18, and are mounted to rock in round orifices 18a formed in the detachable cover 4 and in the front plate of the lock case 1, respectively.

For shifting the latch bolt 9'inwardly, a square hole 19 isprovided in the boss 16,

throughgwhich a spindle of corresponding cross section (not shown) may extend, one end of said spindle being provided with, a suitable handle (not-shown). As the edge 17a of the cam abuts against the inside edge of the transverse strip 11, any turning move ment of the handle will move the latch bolt member 9 inwardly against the resistance ofthe leaf 13, of the spring 12.

The locking mechanism comprisesa locking plate 20, provided with an eccentric opening 21?) to. receive a pin 21 carried by the front plate of the lock case 1. I I ,The locking plate has a key receiving orifice 22 therein opposite the key-holes, 23 in the front and rear plates of the lock case, so that when a key is insertedthrough said key-holes into said orifice and turned,.it engages with one of the sides of the orifice 22,

edge of the latch bolt member 9.

thus rocking the plate 20 on the pin 21 to move a lug 24 carried by said-plateinto or out of engagement with the notch 25 in the lower It is obvious, that, when the locking plate 20 is given an angular displacement by means of the key when-the key is turned in the orifice 22 in an anti-clockwise direction, the stop 24 will be moved out of engagement with the notch 25, and, when the key is turned in a clockwise direction, the stop 24 will engage in the notch 25, locking the latch bolt member 9 against displacement in an inward direction. 7 I

The plate 20 is held in position with its lug 24 in engagement or out of engagement angularlydisplaced, a pin or projection 31 is engagement with the notch 25 o the latch The contour of the latch bo lt member 9, bo

t 9 or against the opposite edge of said projection 26 when said lug 24 is out of enlocked position.

A projection 27 is formed or provided on the locking plate 20, the toe, or toes 32, when there are two projections, as shown in Figure 11, abutting against the inner faceof the lock case 1. The plate 20 has a projection 27 extending laterally from its edge opposite the lug 24,-as shown in Figures 1 and 4, which projection, when the plate20 is rocked tn unlocking position, bears against the lower I edge of the bolt 9, thus preventing the plate 20 from being rocked too far in that direction. Referring to Figure 1 of the drawin it Will be seen that the orifice 22, in the loc 'ng plate 20, isformed substantially as aparallelogram, the corners being rounded. This shaped orifice adapts the rim form of lock for either right or left hand use.

Referring to Figure 7 of the drawings, which shows a mortice type of lock, parts similar to the operative parts hereinbefore described in connection with the rim lock are provided. In this type provision is made for reversal ofthe outer part or catch of the latch bolt 9, in order to adapt the lock for either right or, left hand use. This is accomplished b forming in each side of the catch part of t e bolt 9, at the inner'end of said catch part, a depression of a depth equivalent to the thickness9a of the inner part, so that the forward end of the latter part may be seated in either of said depressions and be secured therein by a screw 29.

Thedetachable cover plate 4 may be formed witha pointed projection 30, so that, when 1 the lock is disposed in a recess formed in the door, a blow may be delivered to the forward end of the lock case 1 to cause the pointed projection 30 tobe driven into the wood to hold the lock anchored at its inner end.

The toe or toes 32, of the projection or projections 27, on the lockin plate 20 (Figures 7 and 11) bear against t e inner face of the lock case, and in order to prevent the locking plate 20 from lifting when being provided in the cover 4, with its inner end engaging with the face of the said locking plate 20.

It will be understood that suitable wards maybe provided in the lock, and that the key may be formed to fit the construction of the wards. I Having thus fully described my invention, what I claim as new and desire tosecure by v r Letters-Patent is 2- p 1. A lock comprisinga casing having an opening in its forward end and a key-hole in each of its sides," a bolt longitudinally shiftable in said casing with its forward end normally projecting through said opening, a plate mounted to rock'insaid casing on an eccentric axis and having a keyreceiving opening opposite said key-holes, said bolt 5 and plate havingmeans to interengage and secure said bolt against movement'when the plate is rocked in one direction and to disen gage and release said bolt when said plate is rocked in the opposite direction, said plate also having a member extending laterally r therefrom to engage one edge of the bolt and limit the movement of the plate when said plate is, rocked in one direction, a single 7 spring in constant engagement with said bolt I andsaid plate, said spring urging said bolt forwardly and holding the interengaging means between said bolt and plate either in V engaging or disengaging position, and means for longitudinally shifting said bolt. 2.7 A look, comprising a 'casinghavingvan opening in its forward end and including front and rear plates eachhaving a keyhole;

a bolt including a nose normally projecting through said opening and a portion of a thickness less than the space 'between said plates, said portion having a notch in its lower edge and being longitudinally shiftable in said; casing with one of its faces spaced from one'of said plates; a pin extending between i said plates and on which the lower edge of the latter portion of ithe bolt is slidable; a

locking. plate mounted to rock on said'pin between the last-named portion of said bolt and the last-named plate, said locking plate I having a key-receiving opening opposite said keyholes and a lug movable into the notch of said bolt to secure the bolt against movement when said locking plateiis rocked in one dir rection and movable out of said-notch to re lease the bolt 1 when said locking plate is rocked inthe oppositedirection, said locking plate also having a projection extending lat- I r erally therefrom; and a substantially V- shaped spring having one arm bearing 1, against the nose of said boltto urge sald bolt forwardly and its other end bearing against the projection of the locking plate to hold j the locking plate positionedwith its lug either 6 inor out of the notch of the bolt. n

l In testimony whereof, I :have signed my" .2 name to this specification-at Dunedin this 20th If day of August, 1928. '1 i TIMOTHY'SMITH. 652 

